I ordered 4 sets of these mounts, from order to delivery, just a few days. Thank you Roboteernat.

I have to say they do their job really well, and are certainly well designed to keep the new*er* Argos drill/gearbox units together and secure. Bye bye to the bodge of holding the motor to the gearbox via some electrical tape!

I will be ordering more sets of these in the near future.